9791084879 has 4 divisors (see below), whose sum is σ = 9796815720. Its totient is φ = 9785354040.

The previous prime is 9791084867. The next prime is 9791084881. The reversal of 9791084879 is 9784801979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9791084879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9791084899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862857 + ... + 2866274.

It is an arithmetic number, because the mean of its divisors is an integer number (2449203930).

Almost surely, 2^9791084879 is an apocalyptic number.

9791084879 is a deficient number, since it is larger than the sum of its proper divisors (5730841).

9791084879 is a wasteful number, since it uses less digits than its factorization.

9791084879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730840.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The square root of 9791084879 is about 98949.9109600408. The cubic root of 9791084879 is about 2139.3258480755.

The spelling of 9791084879 in words is "nine billion, seven hundred ninety-one million, eighty-four thousand, eight hundred seventy-nine".